Complete game on medium mode single player.

Achievement Guide for Legendary

Achievement won on 18 Apr 10TA Score for this game: 2,776
Posted on 18 April 10 at 00:47

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Complete the game without any other players active on the Intermediate setting.

If you have already beaten the entire game once, you can skip certain levels to make future play-throughs quicker. Chapters that have a separate "Conclusion" entry in the selection list do not need to be done. So you need to all selections that are labeled "Conclusion" plus chapters 1, 3, 6, 8, 9, 11, 13, and the Epilogue.

The achievement will unlock at the chapter results screen for the last one you do. Note that the Epilogue's chapter results come after the unskippable credits - do not turn off the game before you see the results screen or you won't get credit for the chapter!